astragal vs loco-weed

astragal

noun
  • A locoweed of the genus Astragalus. 

  • A die, especially a four-sided die historically made from or in imitation of an ankle bone. 

  • Synonym of astragalus: the bone forming the ball of the ankle joint. 

  • A molding attached to double doors to prevent drafts. 

  • A circular molding near the mouth of a cannon. 

  • A tool used to mold such features; similar tools used for connecting panes of glass in a window. 

  • A bracket used to fix downpipes to the wall of a building. 

  • A semicircular molding separating the architrave at the top or bottom of a column. 

loco-weed

How often have the words astragal and loco-weed occurred in a corpus of books? (source: Google Ngram Viewer )